Concatenating string in Grep loop
I'm trying to parse out test ids from a source file with grep, then concatenate all the cases into a single string.
Here I declare the empty string
adrCases=""
then I loop over all lines in the source file with character pattern "// AdrCase "
grep -n "// AdrCase " ${sourceFile} | while read -r line ; do
str=${line}
value=${str#*"// AdrCase "}
str=${value}
value=${str#*" "}
echo "adr case ID = "${value}
adrCases=${adrCases}'"'${value}'",'
done
then echo the concatenated string
echo "adrCases = ${adrCases}"
but the string is just empty, and terminal echos
adrCases =
but ${value} echos the correct ID i.e. // AdrCase 12 53 would be have 53 parsed since there are two cases id, of which I want the latter. Parsing logic seems correct, but not string concatenation logic.
linux bash
asked 16 mins ago
the_prolethe_prole
1274
add a comment |
I'm trying to parse out test ids from a source file with grep, then concatenate all the cases into a single string.
Here I declare the empty string
adrCases=""
then I loop over all lines in the source file with character pattern "// AdrCase "
grep -n "// AdrCase " ${sourceFile} | while read -r line ; do
str=${line}
value=${str#*"// AdrCase "}
str=${value}
value=${str#*" "}
echo "adr case ID = "${value}
adrCases=${adrCases}'"'${value}'",'
done
then echo the concatenated string
echo "adrCases = ${adrCases}"
but the string is just empty, and terminal echos
adrCases =
but ${value} echos the correct ID i.e. // AdrCase 12 53 would be have 53 parsed since there are two cases id, of which I want the latter. Parsing logic seems correct, but not string concatenation logic.
linux bash
asked 16 mins ago
the_prolethe_prole
1274
See Why is my variable local in one 'while read' loop, but not in another seemingly similar loop?
– steeldriver
7 mins ago
Possible duplicate of in bash, read after a pipe is not setting values
– Stephen Harris
2 mins ago
add a comment |
I'm trying to parse out test ids from a source file with grep, then concatenate all the cases into a single string.
Here I declare the empty string
adrCases=""
then I loop over all lines in the source file with character pattern "// AdrCase "
grep -n "// AdrCase " ${sourceFile} | while read -r line ; do
str=${line}
value=${str#*"// AdrCase "}
str=${value}
value=${str#*" "}
echo "adr case ID = "${value}
adrCases=${adrCases}'"'${value}'",'
done
then echo the concatenated string
echo "adrCases = ${adrCases}"
but the string is just empty, and terminal echos
adrCases =
but ${value} echos the correct ID i.e. // AdrCase 12 53 would be have 53 parsed since there are two cases id, of which I want the latter. Parsing logic seems correct, but not string concatenation logic.
linux bash
asked 16 mins ago
the_prolethe_prole
1274
I'm trying to parse out test ids from a source file with grep, then concatenate all the cases into a single string.
Here I declare the empty string
adrCases=""
then I loop over all lines in the source file with character pattern "// AdrCase "
grep -n "// AdrCase " ${sourceFile} | while read -r line ; do
str=${line}
value=${str#*"// AdrCase "}
str=${value}
value=${str#*" "}
echo "adr case ID = "${value}
adrCases=${adrCases}'"'${value}'",'
done
then echo the concatenated string
echo "adrCases = ${adrCases}"
but the string is just empty, and terminal echos
adrCases =
but ${value} echos the correct ID i.e. // AdrCase 12 53 would be have 53 parsed since there are two cases id, of which I want the latter. Parsing logic seems correct, but not string concatenation logic.
linux bash
linux bash
asked 16 mins ago
the_prolethe_prole
1274
asked 16 mins ago
the_prolethe_prole
1274
asked 16 mins ago
the_prolethe_prole
1274
asked 16 mins ago
the_prolethe_prole
1274
asked 16 mins ago
the_prolethe_prole
1274
1274
See Why is my variable local in one 'while read' loop, but not in another seemingly similar loop?
– steeldriver
7 mins ago
Possible duplicate of in bash, read after a pipe is not setting values
– Stephen Harris
2 mins ago
add a comment |
See Why is my variable local in one 'while read' loop, but not in another seemingly similar loop?
– steeldriver
7 mins ago
Possible duplicate of in bash, read after a pipe is not setting values
– Stephen Harris
2 mins ago
See Why is my variable local in one 'while read' loop, but not in another seemingly similar loop?
– steeldriver
7 mins ago
See Why is my variable local in one 'while read' loop, but not in another seemingly similar loop?
– steeldriver
7 mins ago
Possible duplicate of in bash, read after a pipe is not setting values
– Stephen Harris
2 mins ago
Possible duplicate of in bash, read after a pipe is not setting values
– Stephen Harris
2 mins ago
add a comment |
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See Why is my variable local in one 'while read' loop, but not in another seemingly similar loop?
– steeldriver
7 mins ago
Possible duplicate of in bash, read after a pipe is not setting values
– Stephen Harris
2 mins ago